Dell Vostro 1015 won't start

Hi,

I have bought this dell vostro 1015 laptop one and half year ago. Day before yesterday my windows XP hanged and I was unable to shut down. So I pressed power on button for few seconds to switch off my laptop.

Now my laptop is not starting. I see complete blank screen. I tried booting with CD, but no luck. The LED for power is on. The LED for harddisk keeps blinking. But I can not see anything on screen. Not even Dell logo. Nothing happening. No POST. The LED at harddisk keeps blinking. Keyboard does not respond. I tried taking out battery and starting with power adapter. But no luck. Please help.
 
Take the laptop in for service. It is possible that the hard drive, memory or the motherboard has gone bad
 
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